I have an at10, basically the same marker as the at4 and at16 I believe but lighter and more compact. Same exact design otherwise, and it can easily and cheaply be converted to either an at4 or at16 if you so choose from conversion kits at ats' website. It comes with a four inch barrel and a fourteen inch barrel, unisizer to match any size paint as well as mini-inserts to match to your paint if you prefer that. Has a new kevlar magazine in pristine mint condition, hopper adapter, and hopper. Also comes with a parts kit, 2+1 harness, and a remote. If you need nitro for it, I also have a 68/3000psi crossfire steel tank. Crossfire regs have the highest flow rate on the market so it can keep up even with full auto which is pretty cool althought the gun's good in semi mode too. It has been run entirely off nitro and taken very good care of, I can probably post pictures if you want but I don't have any now.
PM me or respond to this thread; if you see something you don't like in my offer we can negociate about it I'm pretty flexible.